Coal-drill



(No Model.) Y

J. W. SHALLBNBBRGER.

GOAL DRILL.

No. 518,703. I Patented Ap1u24, 1894,

WITNESSES;

luv swim,

UNITED STATES PATENT OFFICE.

JOHN WV. SHALLENBERGER, OF CANAL FULTON, ASSIGNOR OF ONF-HALF TO FRANKSHALLENBERGER, OF MASSILLON, OHIO.

COAL-DRILL.

SPECIFICATION forming part of Letters Patent No. 518,703, dated April24, 1894. Application filed December 1, 1893. Serial No. 492,409. (Nomodel.)

To aZZ whom, it may concern.-

Be it known that 1, JOHN W. SHALLENBER- GER, a citizen of the UnitedStates, residing at Canal Fulton, in the county of Stark and State ofOhio, have invented certain new and useful Improvements in Coal-Drills;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the figures of referencemarked thereon, in which- Figure 1, is a view of the drill frame,showing the location and arrangement of the different gear wheels, andportions of the drill shaft, and feed bar. Fig. 2, is a transversesection of the removable power shaft, together with its thimble, andretaining bracket. Fig. 3, is a detached view of the interlockingclutch, and its lever. Fig. 4, is a detached view of the drill, showingthe same properly attached to a drill shank. Fig. 5, is an end view ofthe drill, showing the cutting end of the same. Fig. 6, is a detachedview, showing a portion of a drill shank. Fig. 7, is a detached view ofone of the drill knives. Fig. 8, is a view through line a:-.r Fig. 4.Fig. 9, is a detached view of the worm-shaft bracket, and bearing. Fig.10, is a detached view of the drill shaft, and feed bar. Fig. 11, is aview, showing portions of the feed bar, feed wheel, and the feed barsupport. Fig. 12, is a detached view of the drill holding post.

The present invention has relation to coal drills, and it consists inthe different parts, and combination of parts hereinafter described, andparticularly pointed out in the vided with the set-screw 5. For thepurpose of providing a suitable bearing for the power shaft 3, thethimble or box 6 is provided, said For the purpose of causing the wheel8 to communicate rotary motion to the drill shaft 9, and at the sametime permit the drill-shaft to move lengthwise, said drill-shaft isprovided with the longitudinal groove 10, which groove receives the key11, said key being securely fixed to the wheel 8 or its equivalent, andthe portion of said key that is located in the groove 10 is so adjustedas to size, that it will easily move back and forth in saidgroove, ashereinafter described.

To one side of the wheel 8, and at the end of its hub 12 is located thepinion 13, which pinion, hub, and wheel 8 may if desired be 1 formed ofa single piece, and I prefer to so being securely attached to thecross-shaft 18, i

said cross shaft being properly journaled to the bar 19, or itsequivalent.

Upon the cross-shaft 18 is loosely mounted the feed wheel 20 which feedwheel meshes with the teeth 21 formed upon the feed-bar 22.

To one side of the feed wheel 20 is located the notched hub 23, whichnotched hub, is preferably formed integral with the feed wheel 20. Tothe outer side of the notched hub 23 is located the sliding collar 24,which collar is rotatably attached to the cross-shaft 18, by means ofthe pin 25, and for the purpose of allowing the collar 24 to be moved ashort distance back and forth on the crossshaft 18 the slot 26 isprovided.

For the purpose of providing a means for moving the collar 24 back andforth on its shaft said collar is provided with the groove 27, whichgroove is engaged by the yoked lever 28, said lever being pivotallyattached to the arm 29, or its equivalent. The collar 24 is providedwith the extensions 30, which extensions engage with the notched hub 23,thereby providing an interlocking clutch. It will be understood thatwhen the collar 24 is disengaged from the notched hub 23, said hub andthe feed wheel will be free to revolve upon the cross-shaft 18, duringthe time said shaft is at rest, which arrangement is for the purposehereinafterdescribed.

To the front or forward end of the drill shaft 9 is removably attachedthe drill shank 31 by means of'the angular end 32 and a correspondingrecess formed in the end'of the drill shank, or if desired these partsmay be reversed, as it is of no importance whether an angular extensionbe formed upon the end of the drill shaft or said shaft be rovided withan angular socket; but at the drill end of the drill shaft I prefer tohave the angular extension 33, to receive the angular socket 34.

The drill head 35 is provided with the curved flanges 36 to whichflanges are at tached the blades 37, said blades being lo: cated andarranged substantially as shown in Fi 4.

%or the purpose of setting the blades 37 forward'as they become wornaway from use, said blades are each provided with the elongated slots38, through whichslots are passed the clamping bolts 39 or theirequivalents.

In use when it is desired to drill a considerable distance into the coalor other material, additional sections of the drill shank 31 may beadded, or shanks of diflerent lengths may be provided as desired. Forthe purpose of holding the frame 1, and its different parts in properposition to operate the drill, the post 40 is provided, which post isprovided with the adjustable bar 41, said adjustable bar being providedupon one side thereof with the teeth 42, which teeth are for the purposeof engaging with the pinion 43,

said pinion being securely attached to the crank shaft 44, said crankshaft being properly journaled to the post 40. I

To the crank shaft 44 is attached the ratchet 9 adjustable bar 41 are toprovide for different thicknesses of veins, so that the post proper canbe securely attached to the top and bottom of the opening after the coalor other material has been removed. The post 40 is provided'with thenotches 47 which notches are for the purpose of receiving the frame 1 inthe ordinary manner. The object of providing arms 2 upon each side ofthe frame is to provide a means forlocating the power shaft upon eitherside of the frame, as it frequently happens that the drill frame must beturned upside down in order to bring the crank in position to be used. 1

In use after the drill, has been properly adjusted to the frame and posta crank is attached to the power shaft 3 in the ordinary manner, andsaid power shaft rotated, at the same time the lever 28 is adjusted soas to notched hub 23, thereby causing the feed wheel 20 to move thefeedbar 22 forward which carries with it the drill shaft 9 by means of thecollar 48, which collar is securely fixed to the drill shaft 9. Afterthe drill has been fed into the coal or other material the desireddistance, the lever 28 is so adjusted that it will disengage the collar24 from the notched hub 23, at which time the feed wheel 29 is free torevolve upon the shaft 18, thereby permitting the ,drill shaft 9 and itsdrill to be easily drawn backward, the collar 49 causes the feed bar tofollow the backward movement of the drill shaft 9..

For the purpose of preventing the feed bar 24 from springing the bar 19is located directly below the feed wheel 20, and for the purpose ofpreventing said feed bar from moving laterally the bar 19 is providedwith the recess 50, which recess is formed by bending the portiondirectly below the feed bar downward, as illustrated in Fig. 11; but itwill be understood that the same object can be accomplished by cuttingthe notch or recess 50 in the feed bar 22. For the purpose of securelyholding the post at the desired place of adjustment the points 51 areprovided.

For the purpose of preventing the frame 1 from moving laterally aftersaid frame together with its different parts has been properly attachedto the post 40, the ribs 52 are provided, which ribs come in contactwith the sides of the post 40.

small to receive the end of theframe 1; but it will be understood thatsaid notches should be formed of a size to correspond with the bar ofthe frame 1. p j

Thebar 53 together with the bearing 54 is for the purpose of holding theworm shaft 14 attached to the bar 19.

Having fully described my invention, what ent, is I vided with the'arms2, having concaved faces, the power shaft, removably attached to thearms 2, the gear Wheels 7 and 8, the drill shaft 9,provided with thelongitudinal groove 10, the key 11, the wheels 13 and 15, the shaft 14provided with the worm 16, the wheel 17, mounted on the shaft 18, thefeed wheel 20 looselymounted on the shaft 18, an interlocking clutchmechanism'connected with said feed wheel, the feed bar 22, provided.with teeth, and the drill head 35, substantially as and for, thepurpose set forth.

In Fig. 12 the notches 47 are shown too in proper position, said barbeing securely 1. The combination of the frame 1, probring the collar 24into engagement with the i IIO I claim, and desire to secure by LettersPat- '2. The combinationof the frame 1, provided with thearms2 the powershaft 3, the.

clamp 4, the thimble or bearing 6, the screw 5, gear wheels forcommunicating rotary motion to the drill shaft 9, and longitudinalmovement to the feed bar 22, the drill shank 5 31, and the drill head35, provided with the flanges 36, having adj ustably attached to saidflanges the blades 37, substantially as and for the purpose set forth.

3. In a coal drill the combination of a frame 10 provided with the gearwheels 7, 8,13 and 15,

the worm 16, the wheel 17, the feed wheel 20,

JOHN W. SHALLENBERGER.

Witnesses:

O. W. HEISTER, F, W. BOND.

